Trucker's hitch {Power Cinch Knot, Haymaker's Hitch, Harvester's Hitch) has the distinctive feature of providing a mechanical advantage when being tightened. The variety of names for this hitch is a tribute to its widespread use. It is a valuable knot - particularly for securing loads or tarpaulins. (music video)
Bowline - makes a reasonably secure loop in the end of a piece of rope. It has many uses, e.g., to fasten a mooring line to a ring or a post. Under load, it does not slip or bind. With no load it can be untied easily.
Square knot (Reef knot - a binding knot and, tied in the right material against a curved surface, the first Half Knot may bind – but it cannot be trusted.
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